Counting the days of positive end expiratory pressure therapy in acute lung injury a study guided by computerized tomography

This work was designed to evaluate the effects of titrating positive end expiratory pressure [PEEP] therapy in patients sustained acute long injury [ALI] by using CT scan lung regarding density distribution and the percentage of lung opacities. Twenty adult critical surgical patients fulfilling the criteria of ALI were exposed to different levels of PEEP therapy applied continuously for 30 minutes. Computerized tomography studies of lung zones were done following each PEEP to estimate the effects of PEEP therapy on lung opacities and density clearance